Tank



FIG. 1 is a perspective view of a tank;

FIG. 2 is a perspective view of the tank;

FIG. 3 is an end elevational view of the tank;

FIG. 4 is an end elevational view of the tank from the opposite end of that shown in FIG. 3;

FIG. 5 is a bottom plan view of the tank;

FIG. 6 is a top plan view of the tank;

FIG. 7 is a side elevational view of the tank; and,

FIG. 8 is a side elevational view of the tank from the opposite side to that shown in FIG. 7.

Broken lines shown in the drawings are for illustrative purposes only and do not form part of the claimed design. 

The ornamental design for a tank, as shown and described. 